mirror of
https://github.com/dolphin-emu/dolphin.git
synced 2025-04-28 21:08:04 +03:00
a8e591dc73
The D3D / OGL backends only ever used RGBA textures, and the Software backend uses its own custom code for sampling. The ARGB path seems to just be dead code. Since ARGB and RGBA formats are similar, I don't think this will make the code more difficult to read or unable to be used as reference. Somebody who wants to use this code to output ARGB can simply modify the MakeRGBA function to put the shift at the other end.
629 lines
15 KiB
C++
629 lines
15 KiB
C++
// Copyright 2014 Dolphin Emulator Project
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// Licensed under GPLv2
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// Refer to the license.txt file included.
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#include "VideoCommon/LookUpTables.h"
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#include "VideoCommon/sfont.inc"
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#include "VideoCommon/TextureDecoder.h"
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static bool TexFmt_Overlay_Enable=false;
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static bool TexFmt_Overlay_Center=false;
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// TRAM
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// STATE_TO_SAVE
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GC_ALIGNED16(u8 texMem[TMEM_SIZE]);
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int TexDecoder_GetTexelSizeInNibbles(int format)
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{
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switch (format & 0x3f) {
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case GX_TF_I4: return 1;
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case GX_TF_I8: return 2;
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case GX_TF_IA4: return 2;
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case GX_TF_IA8: return 4;
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case GX_TF_RGB565: return 4;
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case GX_TF_RGB5A3: return 4;
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case GX_TF_RGBA8: return 8;
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case GX_TF_C4: return 1;
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case GX_TF_C8: return 2;
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case GX_TF_C14X2: return 4;
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case GX_TF_CMPR: return 1;
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case GX_CTF_R4: return 1;
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case GX_CTF_RA4: return 2;
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case GX_CTF_RA8: return 4;
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case GX_CTF_YUVA8: return 8;
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case GX_CTF_A8: return 2;
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case GX_CTF_R8: return 2;
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case GX_CTF_G8: return 2;
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case GX_CTF_B8: return 2;
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case GX_CTF_RG8: return 4;
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case GX_CTF_GB8: return 4;
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case GX_TF_Z8: return 2;
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case GX_TF_Z16: return 4;
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case GX_TF_Z24X8: return 8;
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case GX_CTF_Z4: return 1;
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case GX_CTF_Z8M: return 2;
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case GX_CTF_Z8L: return 2;
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case GX_CTF_Z16L: return 4;
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default: return 1;
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}
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}
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int TexDecoder_GetTextureSizeInBytes(int width, int height, int format)
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{
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return (width * height * TexDecoder_GetTexelSizeInNibbles(format)) / 2;
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}
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int TexDecoder_GetBlockWidthInTexels(u32 format)
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{
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switch (format)
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{
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case GX_TF_I4: return 8;
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case GX_TF_I8: return 8;
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case GX_TF_IA4: return 8;
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case GX_TF_IA8: return 4;
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case GX_TF_RGB565: return 4;
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case GX_TF_RGB5A3: return 4;
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case GX_TF_RGBA8: return 4;
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case GX_TF_C4: return 8;
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case GX_TF_C8: return 8;
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case GX_TF_C14X2: return 4;
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case GX_TF_CMPR: return 8;
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case GX_CTF_R4: return 8;
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case GX_CTF_RA4: return 8;
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case GX_CTF_RA8: return 4;
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case GX_CTF_A8: return 8;
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case GX_CTF_R8: return 8;
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case GX_CTF_G8: return 8;
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case GX_CTF_B8: return 8;
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case GX_CTF_RG8: return 4;
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case GX_CTF_GB8: return 4;
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case GX_TF_Z8: return 8;
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case GX_TF_Z16: return 4;
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case GX_TF_Z24X8: return 4;
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case GX_CTF_Z4: return 8;
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case GX_CTF_Z8M: return 8;
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case GX_CTF_Z8L: return 8;
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case GX_CTF_Z16L: return 4;
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default:
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ERROR_LOG(VIDEO, "Unsupported Texture Format (%08x)! (GetBlockWidthInTexels)", format);
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return 8;
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}
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}
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int TexDecoder_GetBlockHeightInTexels(u32 format)
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{
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switch (format)
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{
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case GX_TF_I4: return 8;
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case GX_TF_I8: return 4;
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case GX_TF_IA4: return 4;
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case GX_TF_IA8: return 4;
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case GX_TF_RGB565: return 4;
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case GX_TF_RGB5A3: return 4;
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case GX_TF_RGBA8: return 4;
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case GX_TF_C4: return 8;
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case GX_TF_C8: return 4;
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case GX_TF_C14X2: return 4;
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case GX_TF_CMPR: return 8;
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case GX_CTF_R4: return 8;
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case GX_CTF_RA4: return 4;
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case GX_CTF_RA8: return 4;
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case GX_CTF_A8: return 4;
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case GX_CTF_R8: return 4;
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case GX_CTF_G8: return 4;
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case GX_CTF_B8: return 4;
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case GX_CTF_RG8: return 4;
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case GX_CTF_GB8: return 4;
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case GX_TF_Z8: return 4;
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case GX_TF_Z16: return 4;
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case GX_TF_Z24X8: return 4;
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case GX_CTF_Z4: return 8;
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case GX_CTF_Z8M: return 4;
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case GX_CTF_Z8L: return 4;
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case GX_CTF_Z16L: return 4;
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default:
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ERROR_LOG(VIDEO, "Unsupported Texture Format (%08x)! (GetBlockHeightInTexels)", format);
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return 4;
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}
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}
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//returns bytes
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int TexDecoder_GetPaletteSize(int format)
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{
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switch (format)
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{
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case GX_TF_C4: return 16 * 2;
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case GX_TF_C8: return 256 * 2;
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case GX_TF_C14X2: return 16384 * 2;
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default:
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return 0;
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}
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}
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void TexDecoder_SetTexFmtOverlayOptions(bool enable, bool center)
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{
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TexFmt_Overlay_Enable = enable;
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TexFmt_Overlay_Center = center;
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}
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static const char* texfmt[] = {
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// pixel
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"I4", "I8", "IA4", "IA8",
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"RGB565", "RGB5A3", "RGBA8", "0x07",
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"C4", "C8", "C14X2", "0x0B",
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"0x0C", "0x0D", "CMPR", "0x0F",
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// Z-buffer
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"0x10", "Z8", "0x12", "Z16",
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"0x14", "0x15", "Z24X8", "0x17",
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"0x18", "0x19", "0x1A", "0x1B",
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"0x1C", "0x1D", "0x1E", "0x1F",
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// pixel + copy
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"CR4", "0x21", "CRA4", "CRA8",
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"0x24", "0x25", "CYUVA8", "CA8",
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"CR8", "CG8", "CB8", "CRG8",
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"CGB8", "0x2D", "0x2E", "0x2F",
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// Z + copy
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"CZ4", "0x31", "0x32", "0x33",
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"0x34", "0x35", "0x36", "0x37",
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"0x38", "CZ8M", "CZ8L", "0x3B",
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"CZ16L", "0x3D", "0x3E", "0x3F",
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};
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static void TexDecoder_DrawOverlay(u8 *dst, int width, int height, int texformat, PC_TexFormat pc_texformat)
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{
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int w = std::min(width, 40);
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int h = std::min(height, 10);
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int xoff = (width - w) >> 1;
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int yoff = (height - h) >> 1;
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if (!TexFmt_Overlay_Center)
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{
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xoff=0;
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yoff=0;
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}
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const char* fmt = texfmt[texformat&15];
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while (*fmt)
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{
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int xcnt = 0;
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int nchar = sfont_map[(int)*fmt];
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const unsigned char *ptr = sfont_raw[nchar]; // each char is up to 9x10
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for (int x = 0; x < 9;x++)
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{
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if (ptr[x] == 0x78)
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break;
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xcnt++;
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}
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for (int y=0; y < 10; y++)
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{
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for (int x=0; x < xcnt; x++)
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{
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switch (pc_texformat)
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{
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case PC_TEX_FMT_I8:
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{
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// TODO: Is this an acceptable way to draw in I8?
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u8 *dtp = (u8*)dst;
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dtp[(y + yoff) * width + x + xoff] = ptr[x] ? 0xFF : 0x88;
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break;
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}
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case PC_TEX_FMT_IA8:
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case PC_TEX_FMT_IA4_AS_IA8:
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{
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u16 *dtp = (u16*)dst;
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dtp[(y + yoff) * width + x + xoff] = ptr[x] ? 0xFFFF : 0xFF00;
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break;
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}
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case PC_TEX_FMT_RGB565:
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{
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u16 *dtp = (u16*)dst;
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dtp[(y + yoff)*width + x + xoff] = ptr[x] ? 0xFFFF : 0x0000;
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break;
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}
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default:
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case PC_TEX_FMT_BGRA32:
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{
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int *dtp = (int*)dst;
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dtp[(y + yoff) * width + x + xoff] = ptr[x] ? 0xFFFFFFFF : 0xFF000000;
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break;
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}
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}
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}
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ptr += 9;
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}
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xoff += xcnt;
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fmt++;
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}
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}
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PC_TexFormat TexDecoder_Decode(u8 *dst, const u8 *src, int width, int height, int texformat, int tlutaddr, int tlutfmt)
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{
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PC_TexFormat pc_texformat = _TexDecoder_DecodeImpl((u32*)dst, src, width, height, texformat, tlutaddr, tlutfmt);
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if (TexFmt_Overlay_Enable && pc_texformat != PC_TEX_FMT_NONE)
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TexDecoder_DrawOverlay(dst, width, height, texformat, pc_texformat);
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return pc_texformat;
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}
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static inline u32 makeRGBA(int r, int g, int b, int a)
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{
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return (a<<24)|(b<<16)|(g<<8)|r;
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}
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static inline u32 decodeIA8Swapped(u16 val)
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{
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int a = val & 0xFF;
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int i = val >> 8;
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return i | (i<<8) | (i<<16) | (a<<24);
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}
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static inline u32 decode565RGBA(u16 val)
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{
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int r,g,b,a;
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r=Convert5To8((val>>11) & 0x1f);
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g=Convert6To8((val>>5 ) & 0x3f);
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b=Convert5To8((val ) & 0x1f);
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a=0xFF;
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return r | (g<<8) | (b << 16) | (a << 24);
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}
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static inline u32 decode5A3RGBA(u16 val)
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{
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int r,g,b,a;
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if ((val&0x8000))
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{
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r=Convert5To8((val>>10) & 0x1f);
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g=Convert5To8((val>>5 ) & 0x1f);
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b=Convert5To8((val ) & 0x1f);
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a=0xFF;
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}
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else
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{
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a=Convert3To8((val>>12) & 0x7);
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r=Convert4To8((val>>8 ) & 0xf);
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g=Convert4To8((val>>4 ) & 0xf);
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b=Convert4To8((val ) & 0xf);
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}
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return r | (g<<8) | (b << 16) | (a << 24);
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}
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struct DXTBlock
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{
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u16 color1;
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u16 color2;
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u8 lines[4];
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};
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void TexDecoder_DecodeTexel(u8 *dst, const u8 *src, int s, int t, int imageWidth, int texformat, int tlutaddr, int tlutfmt)
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{
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/* General formula for computing texture offset
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//
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u16 sBlk = s / blockWidth;
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u16 tBlk = t / blockHeight;
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u16 widthBlks = (width / blockWidth) + 1;
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u32 base = (tBlk * widthBlks + sBlk) * blockWidth * blockHeight;
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u16 blkS = s & (blockWidth - 1);
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u16 blkT = t & (blockHeight - 1);
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u32 blkOff = blkT * blockWidth + blkS;
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*/
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switch (texformat)
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{
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case GX_TF_C4:
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{
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u16 sBlk = s >> 3;
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u16 tBlk = t >> 3;
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u16 widthBlks = (imageWidth >> 3) + 1;
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u32 base = (tBlk * widthBlks + sBlk) << 5;
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u16 blkS = s & 7;
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u16 blkT = t & 7;
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u32 blkOff = (blkT << 3) + blkS;
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int rs = (blkOff & 1)?0:4;
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u32 offset = base + (blkOff >> 1);
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u8 val = (*(src + offset) >> rs) & 0xF;
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u16 *tlut = (u16*)(texMem + tlutaddr);
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switch (tlutfmt)
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{
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case 0:
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*((u32*)dst) = decodeIA8Swapped(tlut[val]);
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break;
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case 1:
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*((u32*)dst) = decode565RGBA(Common::swap16(tlut[val]));
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break;
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case 2:
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*((u32*)dst) = decode5A3RGBA(Common::swap16(tlut[val]));
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break;
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}
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}
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break;
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case GX_TF_I4:
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{
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u16 sBlk = s >> 3;
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u16 tBlk = t >> 3;
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u16 widthBlks = (imageWidth >> 3) + 1;
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u32 base = (tBlk * widthBlks + sBlk) << 5;
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u16 blkS = s & 7;
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u16 blkT = t & 7;
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u32 blkOff = (blkT << 3) + blkS;
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int rs = (blkOff & 1)?0:4;
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u32 offset = base + (blkOff >> 1);
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u8 val = (*(src + offset) >> rs) & 0xF;
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val = Convert4To8(val);
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dst[0] = val;
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dst[1] = val;
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dst[2] = val;
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dst[3] = val;
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}
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break;
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case GX_TF_I8:
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{
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u16 sBlk = s >> 3;
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u16 tBlk = t >> 2;
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u16 widthBlks = (imageWidth >> 3) + 1;
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u32 base = (tBlk * widthBlks + sBlk) << 5;
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u16 blkS = s & 7;
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u16 blkT = t & 3;
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u32 blkOff = (blkT << 3) + blkS;
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u8 val = *(src + base + blkOff);
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dst[0] = val;
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dst[1] = val;
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dst[2] = val;
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dst[3] = val;
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}
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break;
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case GX_TF_C8:
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{
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u16 sBlk = s >> 3;
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u16 tBlk = t >> 2;
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u16 widthBlks = (imageWidth >> 3) + 1;
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u32 base = (tBlk * widthBlks + sBlk) << 5;
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u16 blkS = s & 7;
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u16 blkT = t & 3;
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u32 blkOff = (blkT << 3) + blkS;
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u8 val = *(src + base + blkOff);
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u16 *tlut = (u16*)(texMem + tlutaddr);
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switch (tlutfmt)
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{
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case 0:
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*((u32*)dst) = decodeIA8Swapped(tlut[val]);
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break;
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case 1:
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*((u32*)dst) = decode565RGBA(Common::swap16(tlut[val]));
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break;
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case 2:
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*((u32*)dst) = decode5A3RGBA(Common::swap16(tlut[val]));
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break;
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}
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}
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break;
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case GX_TF_IA4:
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{
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u16 sBlk = s >> 3;
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u16 tBlk = t >> 2;
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u16 widthBlks = (imageWidth >> 3) + 1;
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u32 base = (tBlk * widthBlks + sBlk) << 5;
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u16 blkS = s & 7;
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u16 blkT = t & 3;
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u32 blkOff = (blkT << 3) + blkS;
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u8 val = *(src + base + blkOff);
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const u8 a = Convert4To8(val>>4);
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const u8 l = Convert4To8(val&0xF);
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dst[0] = l;
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dst[1] = l;
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dst[2] = l;
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dst[3] = a;
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}
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break;
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case GX_TF_IA8:
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{
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u16 sBlk = s >> 2;
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u16 tBlk = t >> 2;
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u16 widthBlks = (imageWidth >> 2) + 1;
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u32 base = (tBlk * widthBlks + sBlk) << 4;
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u16 blkS = s & 3;
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u16 blkT = t & 3;
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u32 blkOff = (blkT << 2) + blkS;
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u32 offset = (base + blkOff) << 1;
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const u16* valAddr = (u16*)(src + offset);
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*((u32*)dst) = decodeIA8Swapped(*valAddr);
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}
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break;
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case GX_TF_C14X2:
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{
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u16 sBlk = s >> 2;
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u16 tBlk = t >> 2;
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u16 widthBlks = (imageWidth >> 2) + 1;
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u32 base = (tBlk * widthBlks + sBlk) << 4;
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u16 blkS = s & 3;
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u16 blkT = t & 3;
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u32 blkOff = (blkT << 2) + blkS;
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u32 offset = (base + blkOff) << 1;
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const u16* valAddr = (u16*)(src + offset);
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u16 val = Common::swap16(*valAddr) & 0x3FFF;
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u16 *tlut = (u16*)(texMem + tlutaddr);
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switch (tlutfmt)
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{
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case 0:
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*((u32*)dst) = decodeIA8Swapped(tlut[val]);
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|
break;
|
|
case 1:
|
|
*((u32*)dst) = decode565RGBA(Common::swap16(tlut[val]));
|
|
break;
|
|
case 2:
|
|
*((u32*)dst) = decode5A3RGBA(Common::swap16(tlut[val]));
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
case GX_TF_RGB565:
|
|
{
|
|
u16 sBlk = s >> 2;
|
|
u16 tBlk = t >> 2;
|
|
u16 widthBlks = (imageWidth >> 2) + 1;
|
|
u32 base = (tBlk * widthBlks + sBlk) << 4;
|
|
u16 blkS = s & 3;
|
|
u16 blkT = t & 3;
|
|
u32 blkOff = (blkT << 2) + blkS;
|
|
|
|
u32 offset = (base + blkOff) << 1;
|
|
const u16* valAddr = (u16*)(src + offset);
|
|
|
|
*((u32*)dst) = decode565RGBA(Common::swap16(*valAddr));
|
|
}
|
|
break;
|
|
case GX_TF_RGB5A3:
|
|
{
|
|
u16 sBlk = s >> 2;
|
|
u16 tBlk = t >> 2;
|
|
u16 widthBlks = (imageWidth >> 2) + 1;
|
|
u32 base = (tBlk * widthBlks + sBlk) << 4;
|
|
u16 blkS = s & 3;
|
|
u16 blkT = t & 3;
|
|
u32 blkOff = (blkT << 2) + blkS;
|
|
|
|
u32 offset = (base + blkOff) << 1;
|
|
const u16* valAddr = (u16*)(src + offset);
|
|
|
|
*((u32*)dst) = decode5A3RGBA(Common::swap16(*valAddr));
|
|
}
|
|
break;
|
|
case GX_TF_RGBA8:
|
|
{
|
|
u16 sBlk = s >> 2;
|
|
u16 tBlk = t >> 2;
|
|
u16 widthBlks = (imageWidth >> 2) + 1;
|
|
u32 base = (tBlk * widthBlks + sBlk) << 5; // shift by 5 is correct
|
|
u16 blkS = s & 3;
|
|
u16 blkT = t & 3;
|
|
u32 blkOff = (blkT << 2) + blkS;
|
|
|
|
u32 offset = (base + blkOff) << 1 ;
|
|
const u8* valAddr = src + offset;
|
|
|
|
dst[3] = valAddr[0];
|
|
dst[0] = valAddr[1];
|
|
dst[1] = valAddr[32];
|
|
dst[2] = valAddr[33];
|
|
}
|
|
break;
|
|
case GX_TF_CMPR:
|
|
{
|
|
u16 sDxt = s >> 2;
|
|
u16 tDxt = t >> 2;
|
|
|
|
u16 sBlk = sDxt >> 1;
|
|
u16 tBlk = tDxt >> 1;
|
|
u16 widthBlks = (imageWidth >> 3) + 1;
|
|
u32 base = (tBlk * widthBlks + sBlk) << 2;
|
|
u16 blkS = sDxt & 1;
|
|
u16 blkT = tDxt & 1;
|
|
u32 blkOff = (blkT << 1) + blkS;
|
|
|
|
u32 offset = (base + blkOff) << 3;
|
|
|
|
const DXTBlock* dxtBlock = (const DXTBlock*)(src + offset);
|
|
|
|
u16 c1 = Common::swap16(dxtBlock->color1);
|
|
u16 c2 = Common::swap16(dxtBlock->color2);
|
|
int blue1 = Convert5To8(c1 & 0x1F);
|
|
int blue2 = Convert5To8(c2 & 0x1F);
|
|
int green1 = Convert6To8((c1 >> 5) & 0x3F);
|
|
int green2 = Convert6To8((c2 >> 5) & 0x3F);
|
|
int red1 = Convert5To8((c1 >> 11) & 0x1F);
|
|
int red2 = Convert5To8((c2 >> 11) & 0x1F);
|
|
|
|
u16 ss = s & 3;
|
|
u16 tt = t & 3;
|
|
|
|
int colorSel = dxtBlock->lines[tt];
|
|
int rs = 6 - (ss << 1);
|
|
colorSel = (colorSel >> rs) & 3;
|
|
colorSel |= c1 > c2?0:4;
|
|
|
|
u32 color = 0;
|
|
|
|
switch (colorSel)
|
|
{
|
|
case 0:
|
|
case 4:
|
|
color = makeRGBA(red1, green1, blue1, 255);
|
|
break;
|
|
case 1:
|
|
case 5:
|
|
color = makeRGBA(red2, green2, blue2, 255);
|
|
break;
|
|
case 2:
|
|
color = makeRGBA(red1+(red2-red1)/3, green1+(green2-green1)/3, blue1+(blue2-blue1)/3, 255);
|
|
break;
|
|
case 3:
|
|
color = makeRGBA(red2+(red1-red2)/3, green2+(green1-green2)/3, blue2+(blue1-blue2)/3, 255);
|
|
break;
|
|
case 6:
|
|
color = makeRGBA((int)ceil((float)(red1+red2)/2), (int)ceil((float)(green1+green2)/2), (int)ceil((float)(blue1+blue2)/2), 255);
|
|
break;
|
|
case 7:
|
|
color = makeRGBA(red2, green2, blue2, 0);
|
|
break;
|
|
}
|
|
|
|
*((u32*)dst) = color;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
void TexDecoder_DecodeTexelRGBA8FromTmem(u8 *dst, const u8 *src_ar, const u8* src_gb, int s, int t, int imageWidth)
|
|
{
|
|
u16 sBlk = s >> 2;
|
|
u16 tBlk = t >> 2;
|
|
u16 widthBlks = (imageWidth >> 2) + 1; // TODO: Looks wrong. Shouldn't this be ((imageWidth-1)>>2)+1 ?
|
|
u32 base_ar = (tBlk * widthBlks + sBlk) << 4;
|
|
u32 base_gb = (tBlk * widthBlks + sBlk) << 4;
|
|
u16 blkS = s & 3;
|
|
u16 blkT = t & 3;
|
|
u32 blk_off = (blkT << 2) + blkS;
|
|
|
|
u32 offset_ar = (base_ar + blk_off) << 1;
|
|
u32 offset_gb = (base_gb + blk_off) << 1;
|
|
const u8* val_addr_ar = src_ar + offset_ar;
|
|
const u8* val_addr_gb = src_gb + offset_gb;
|
|
|
|
dst[3] = val_addr_ar[0]; // A
|
|
dst[0] = val_addr_ar[1]; // R
|
|
dst[1] = val_addr_gb[0]; // G
|
|
dst[2] = val_addr_gb[1]; // B
|
|
}
|
|
|
|
PC_TexFormat TexDecoder_DecodeRGBA8FromTmem(u8* dst, const u8 *src_ar, const u8 *src_gb, int width, int height)
|
|
{
|
|
// TODO for someone who cares: Make this less slow!
|
|
for (int y = 0; y < height; ++y)
|
|
for (int x = 0; x < width; ++x)
|
|
{
|
|
TexDecoder_DecodeTexelRGBA8FromTmem(dst, src_ar, src_gb, x, y, width-1);
|
|
dst += 4;
|
|
}
|
|
|
|
return PC_TEX_FMT_RGBA32;
|
|
}
|